Antisplash guard for typographical machines



June 1 1936- J. H. HANSON ET AL.

AN TISPLASH GUARD FOR TYPOGRAPHICAL MACHINES Filed July 5, 1933 Illll lu VVZZz'anz Mffanaozz THEIR ATTORNEYS Patented June 16, 1936 UNITED STATES PATENT OFFICE ANTISPLASH GUARD FOR TYPOGRAPHICAL MACHINES John H. Hanson and William M. Hanson, Chicago, Ill.

Application July 5, 1933, Serial No. 679,126

'1 Claims.

an intermittently rotatable shaft on which a gear is mounted, the latter supporting molds of a well known structure. As the mold supporting gear is rotated by means of the shaft, the molds are brought into position to receive from a delivery spout or nozzle 3, charge of molten metal. In the constant use of these molds during the operation of the mold supporting gear, films of the molten metal collect upon certain portions of the mold as well as upon the face of the spout or nozzle, and when this collection of film increases to a predetermined thickness, the pressure behind the incoming molten metal causes the metal to spit or splash. As this mold carrying gear is located near the seat occupied by the operator, this spitting or splashing of the metal in many instances endangers the operator and causes severe injury to him.

It is, therefore, one of the many objects of this invention to not only provide an anti-splash guard for typographical machines which is simple in structure, but to provide a guard which will eifectively prevent this spitting or splashing of the molten metal, thereby protecting the opera tor from injury, such as burns or the like.

0ther objects will appear hereinafter.

The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing showing the preferred form of construction, and in which:

Fig. 1 illustrates a partial vertical cross-sectional detail view through the mold carrying gear and melting pot of a, typographical machine of a well known structure;

Fig. 2 is a part sectional detail view of the mold carrying gear;

Fig. 3 is a fragmentary sectional detail view of the mold carrying gear illustrated in Fig. 2 showing our invention in applied position;

Fig. 4 is a fragmentary sectional detail view similar to that shown in Fig. 3 illustrating a modified form of construction of the guard embodied in the invention;

Fig. 5 is a perspective view of the anti-splash guard illustrated in applied position in Figs. 1 to 3 inclusive; and

Fig. 6 is a perspective view of a guard embodied in the invention illustrating a modified form of construction such as is shown in Fig. 4.

Referring now particularly to the drawing, a melting pot is indicated at In, and this melting pot essentially consists of nozzle H, the outer face I2 of which is adapted to have flush engagement with the face of the molds I 3 as they are intermittently moved into co-incidal position with the spout or nozzle.

a delivery spout or The mold carrying gear is indicated at M, and

this gear is mounted upon a suitable shaft (not shown) which effects an intermittent rotation thereof. Formed in this gear are the mold receiving pockets IS in which the molds l3 are mounted. Between the upper wall l6 of each mold pocket and the top edge I! of each mold we mount our improved guard.

The guard illustrated in Fig. 5 intermittent its end portions is substantially arcuate in plan view so as to correspond with the curvature of the top wall I! of the mold, and the mold engaging flange 18 of the guard indicated at I9 is preferably tapered transversely for reasons which will be hereinafter more apparent.

This guard l9 includes a flange 20 which engages the face 2| of the gear l4 when the mold engaging flange. I8 is mounted within the crevice between the wall l6 and the top edge l1. When the guard is thus mounted it is held in position by the set screws 22 which have their inner end portions 23 preferably seated in openings 24 formed in the flange 20. This set screw functions to releasably latch the mold in'the mold pocket or recess. The flange 20 is of such width as to completely close the. crevice indicated at 25, and is of such length as to close the crevice on the receiving side of the mold so that no metal can find lodgement within this crevice and result in the spitting or splashing hereinbefore mentioned.

The guard illustrated in Fig. 6 is substantially similar to that illustrated in Fig. 5, with the exception that this guard 26 is channel-shaped in cross-section. Its application and function is substantially the same as the guard l9.

It will be apparent that when a guard similar to that illustrated in Figs. 5 and 6 of the drawing is mounted with respect to the mold and gear as illustrated in Figs. 3 and 4, the confinement of metal film orparticles in the crevice or upon the walls of the crevice is eliminated, and therefore the metal must necessarily find admission directly into the mold l3. Under these conditions it is manifest that there is nothing to cause splashing or spitting of the molten metal as it is forced from the spout or nozzle into the mold.

By tapering the flange I8, should there be any metal film collected thereupon, this tapering will facilitate expeditious withdrawal of the guard from the crevice 25 so as to permit scraping and removing of any metal thereabout.

While we have illustrated and described the preferred form of construction for carrying our invention into effect, this is capable of variation and modification without departing from the spirit of the invention. We, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail ourselves of such variations and modifications as come within the scope of the appended claims.

Having thus described our invention, what we claim as new and desire to protect by Letters Patent is:

1. An attachment for a typographical machine which machine comprises a melting pot having a delivery nozzle and a gear having pockets ineach of which a mold is mounted for movement with the gear in position to receive molten metal from the nozzle, comprising a guard having a horizontal flange adapted for confinement between the top wall of the mold and adjacent wall of the.

pocket, and a vertical flange adapted to be positioned adjacent that face of the gear opposite the melting pot.

2. An attachment for a typographical machine which machine comprises a melting pot having a delivery nozzle and a gear having pockets in each of which a mold is mounted for movement with the gear in position to receive molten metal from the nozzle, comprising a guard having a horizontal flange adapted for confinement between the top wall of the mold and adjacent wall of the pocket, a vertical flange adapted to be positioned adjacent that face of the gear opposite the melting pot, and means common to the mold and guard for attaching said mold and guard in operative position with respect to the gear.

3. An attachment for a typographical machine which machine comprises a melting pot having a delivery nozzle and a gear having pockets in each of which a mold is mounted for movement with the gear in position to receive molten metal from the nozzle, comprising a guard having a horizontal flange tapered transversely and adapted for confinement between the top wall of the mold and adjacent wall of the pocket, and a vertical flange adapted to be positioned adjacent that face of the gear opposite the melting pot. 7

4. An attachment for a typographical machine which machine comprises a melting pot having a delivery nozzle and a gear having pockets in each of which a mold is mounted for movement with the gear in position to receive molten metal from the nozzle, comprising a guard having a horizontal flange tapered transversely and adapted for confinement between the top wall of the mold and adjacent wall of the pocket, a vertical flange adapted to be positioned adjacent that face of the gear opposite the melting pot, and means common to the mold and guard for attaching said mold and guard in operative position with respect to the gear.

5. In a device of the type described, a mold supporting gear having an opening therethrough, a mold positioned within the opening and being of smaller proportions than the opening, a filler member arranged to be positioned within the clearance between the mold and the wall of the opening, to provide a seal, said filler member comprising a flange arranged to rest on the mold and a second flange arranged to engage a face of the gear, said first-named flange having an opening,

and a set screw associated with said gear arsupporting gear having an opening therethrough,

opening, to provide a seal, said filler member comprising a flange arranged to rest on the mold and a pair of flanges arranged to bear on opposite faces of said gear, said first-named flange having an opening, and a set screw associated with said gear arranged with one end within the opening in the said first-named flange, to secure the filler member in position.

'7. In a typographical machine, a gear having an opening therethrough for the reception of a mold, said mold being of smaller proportions than the opening, a filler member for closing the space between the mold and the wall of the opening, said filler member having a sealing surface bearing against the mold and sealing flanges having sealing relation with the two sides of the gear, and means carried by the gear for securing the filler member in position.

JOHN H. HANSON. WILLIAM M. HANSON. 

